31406112 has 36 divisors (see below), whose sum is σ = 89311950. Its totient is φ = 10468608.

The previous prime is 31406099. The next prime is 31406117. The reversal of 31406112 is 21160413.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 31404816 + 1296 = 5604^2 + 36^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31406117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54237 + ... + 54812.

Almost surely, 2^31406112 is an apocalyptic number.

31406112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31406112 is an abundant number, since it is smaller than the sum of its proper divisors (57905838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31406112 is a wasteful number, since it uses less digits than its factorization.

31406112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109065 (or 109054 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 31406112 is about 5604.1156304987. The cubic root of 31406112 is about 315.5038949425.

Adding to 31406112 its reverse (21160413), we get a palindrome (52566525).

The spelling of 31406112 in words is "thirty-one million, four hundred six thousand, one hundred twelve".